Form in ruby on rails

I'm starting with rails and I need help with the following problem: I have two tables one for recipes and another for recipe details. In a form I need to load a recipe with one or two more details

<h3 class="text-muted">Datos afiliado</h3>
    <div class="form-row align-items-center">

        <div class="col-auto">
          <div class="input-group mb-2">
            <div class="input-group-prepend">
              <div class="input-group-text form-control-sm">Beneficiario Nro</div>
            </div>
            <!-- <input type="numeric" name="nro-beneficiario" class='form-control form-control-sm'> -->
            <%= form.text_field :socio_id, id: :prescription_socio_id, class: 'form-control form-control-sm' %>
            <div class="input-group-prepend">
                <%= link_to index_socios_path, remote: true, class: "btn btn-outline-info my-2 my-sm-0 form-control-sm" do %>
                    <i class="material-icons">search</i>
                <% end %>
            </div>
          </div>
        </div>

        <div class="col-auto">
          <div class="input-group mb-2">
            <div class="input-group-prepend">
              <div class="input-group-text form-control-sm">Nombre</div>
            </div>
            <input type="text" readonly name="nombre-beneficiario" class='form-control form-control-sm'>
          </div>
        </div>

        <div class="col-auto">
          <div class="input-group mb-2">
            <div class="input-group-prepend">
              <div class="input-group-text form-control-sm">Documento Nro</div>
            </div>
            <input type="numeric" readonly name="documento-beneficiario" class='form-control form-control-sm'>
          </div>
        </div>

    </div>
<hr>

<h3 class="text-muted">Medicamentos</h3>
    <a href="#" onclick="AgregarCampos();">
        <i class="material-icons">note_add</i>
    </a>
    <div id="campos">
        <%= form.fields_for :prescription_detail do |d_form| %>
            <%= d_form.text_field :medicine_id, type: 'hidden', value: '1' %>
            <div class="form-row align-items-center">

                <div class="col-auto">
                  <div class="input-group mb-2">
                    <div class="input-group-prepend">
                      <div class="input-group-text form-control-sm">Medicamento</div>
                    </div>
                    <input type="numeric" name="medicamento-nombre" class='form-control form-control-sm'>
                    <div class="input-group-prepend">
                        <%= link_to index_medicamentos_path, remote: true, class: "btn btn-outline-info my-2 my-sm-0 form-control-sm" do %>
                            <i class="material-icons">search</i>
                        <% end %>
                    </div>
                  </div>
                </div>

                <div class="col-auto">
                  <div class="input-group mb-2">
                    <div class="input-group-prepend">
                      <div class="input-group-text form-control-sm">Pres.</div>
                    </div>
                    <input type="text" readonly name="medicamento-presentacion" class='form-control form-control-sm'>
                  </div>
                </div>

                <div class="col-auto">
                  <div class="input-group mb-2">
                    <div class="input-group-prepend">
                      <div class="input-group-text form-control-sm">Droga</div>
                    </div>
                    <input type="numeric" readonly name="medicamento-monodroga" class='form-control form-control-sm'>
                  </div>
                </div>

                <div class="col-auto">
                  <div class="input-group mb-2">
                    <div class="input-group-prepend">
                      <div class="input-group-text form-control-sm">Cant.</div>
                    </div>
                    <%= d_form.text_field :cantidad, class: 'form-control form-control-sm' %>
                  </div>
                </div>  
            </div>
        <% end %>
    <div>

<%= form.submit 'Guardar', class: 'btn btn-outline-success' %>

I need to save more than one detail from the same form